linux-cve-announce - CVE-2025-37740: jfs: add sanity check for agwidth in dbMount

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-ID: <2025050133-CVE-2025-37740-bf8e@gregkh>
Date: Thu,  1 May 2025 14:56:46 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2025-37740: jfs: add sanity check for agwidth in dbMount

From: Greg Kroah-Hartman <gregkh@...nel.org>

Description
===========

In the Linux kernel, the following vulnerability has been resolved:

jfs: add sanity check for agwidth in dbMount

The width in dmapctl of the AG is zero, it trigger a divide error when
calculating the control page level in dbAllocAG.

To avoid this issue, add a check for agwidth in dbAllocAG.

The Linux kernel CVE team has assigned CVE-2025-37740 to this issue.


Affected and fixed versions
===========================

	Fixed in 6.1.135 with commit a260bf14cd347878f01f70739ba829442a474a16
	Fixed in 6.6.88 with commit cc0bc4cb62ce5fa0c383e3bf0765d01f46bd49ac
	Fixed in 6.12.24 with commit ccd97c8a4f90810f228ee40d1055148fa146dd57
	Fixed in 6.13.12 with commit c8c96a9e7660e5e5eea445978fe8f2e432d91c1f
	Fixed in 6.14.3 with commit e3f85edb03183fb06539e5b50dd2c4bb42b869f0
	Fixed in 6.15-rc1 with commit ddf2846f22e8575d6b4b6a66f2100f168b8cd73d

Please see https://www.kernel.org for a full list of currently supported
kernel versions by the kernel community.

Unaffected versions might change over time as fixes are backported to
older supported kernel versions.  The official CVE entry at
	https://cve.org/CVERecord/?id=CVE-2025-37740
will be updated if fixes are backported, please check that for the most
up to date information about this issue.


Affected files
==============

The file(s) affected by this issue are:
	fs/jfs/jfs_dmap.c


Mitigation
==========

The Linux kernel CVE team recommends that you update to the latest
stable kernel version for this, and many other bugfixes.  Individual
changes are never tested alone, but rather are part of a larger kernel
release.  Cherry-picking individual commits is not recommended or
supported by the Linux kernel community at all.  If however, updating to
the latest release is impossible, the individual changes to resolve this
issue can be found at these commits:
	https://git.kernel.org/stable/c/a260bf14cd347878f01f70739ba829442a474a16
	https://git.kernel.org/stable/c/cc0bc4cb62ce5fa0c383e3bf0765d01f46bd49ac
	https://git.kernel.org/stable/c/ccd97c8a4f90810f228ee40d1055148fa146dd57
	https://git.kernel.org/stable/c/c8c96a9e7660e5e5eea445978fe8f2e432d91c1f
	https://git.kernel.org/stable/c/e3f85edb03183fb06539e5b50dd2c4bb42b869f0
	https://git.kernel.org/stable/c/ddf2846f22e8575d6b4b6a66f2100f168b8cd73d